Hi,
Thank you very much for your help. Can you post the output of your matlab
program for 250 total decimation? I would do it myself with your m file,
but I don't have matlab.
Thanks,
Hans
----- Original Message -----
From: "Eng. Firas" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, May 17, 2007 12:47 PM
Subject: [Discuss-gnuradio] Complete USRP DDC Frequency Response Analysis
Dear Friends,
Attached is a complete MATLAB based USRP DDC frequency response Analysis
figures. The USRP DDC decimation rate was 64. The CIC filter response
(decimation =32), HBF response (decimation =2) and cascaded CIC + HBF
(total
decimation =64) response figures are attached. The MatLab source file used
in this analysis is also attached.
I hope this is a useful work.
Regards,
Firas,
http://www.nabble.com/file/8500/%280%20-%2032%29MHz%29%20CIC%20Frequency%20Response%20%28CIC%20decimation%20%3D32%29.JPG
(0 - 32)MHz) CIC Frequency Response (CIC decimation =32).JPG
http://www.nabble.com/file/8501/%280%20-%202%29MHz%29%20CIC%20Frequency%20Response%20%28decimation%20%3D32%29.JPG
(0 - 2)MHz) CIC Frequency Response (decimation =32).JPG
http://www.nabble.com/file/8502/Useful%20Band%20%280%20-%201%29MHz%29%20%20HBF%20Frequency%20Response.JPG
Useful Band (0 - 1)MHz) HBF Frequency Response.JPG
http://www.nabble.com/file/8503/Useful%20Band%20%280%20-%201%29MHz%29%20CIC%20%2B%20HBF%20Frequency%20Response%20%28decimation%20%3D64%29.JPG
Useful Band (0 - 1)MHz) CIC + HBF Frequency Response (decimation =64).JPG
http://www.nabble.com/file/8504/Full%20Band%20%280%20-%2032%29MHz%29%20USRP%20DDC%20Frequency%20Response%20%28decimation%20%3D64%29.JPG
Full Band (0 - 32)MHz) USRP DDC Frequency Response (decimation =64).JPG
http://www.nabble.com/file/8505/Useful%20Band%20%280%20-%201%29MHz%29%20USRP%20DDC%20Frequency%20Response%20%28decimation%20%3D64%29.JPG
Useful Band (0 - 1)MHz) USRP DDC Frequency Response (decimation =64).JPG
The MATLAB m File used to generate the above figures:-
http://www.nabble.com/file/8506/usrpddc.m usrpddc.m
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